12/11 Decimal Story Problems

A decimal is a way of representing numbers that are not whole numbers, using a point (.) to separate the whole part from the fractional part.

To multiply a decimal by a whole number, multiply as if there are no decimals, then count the total number of decimal places in the numbers being multiplied and place the decimal point in the product accordingly.

Finding a fraction of a number means to divide the number into equal parts and take the specified number of those parts.

To calculate the total cost, multiply the price of each item by the quantity purchased and then add all the amounts together.

The average is found by adding all the numbers together and then dividing by the total number of items.

To convert a fraction to a decimal, divide the numerator (top number) by the denominator (bottom number).

Estimating helps to quickly assess the reasonableness of an answer and can simplify calculations.

To subtract decimals, align the numbers by the decimal point and subtract as you would with whole numbers, placing the decimal point in the answer directly below the other decimal points.

A word problem is a mathematical question presented in the form of a story or real-life scenario that requires interpretation and problem-solving.

To find the difference, subtract the smaller amount from the larger amount.